Dockerfile

# ACE-Step 1.5 - Hugging Face Docker Space (GPU)
# Uses CUDA base; no GPU at build time. Port 7860 for Gradio.
# See https://huggingface.co/docs/hub/spaces-sdks-docker

FROM nvidia/cuda:12.4.0-cudnn8-runtime-ubuntu22.04

ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install -y --no-install-recommends \
    python3 python3-pip python3-venv python3-dev \
    git build-essential \
    && rm -rf /var/lib/apt/lists/*

# HF Spaces run as user 1000
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user PATH=/home/user/.local/bin:$PATH
WORKDIR /home/user/app

# Install Python deps (no GPU ops at build time)
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# App code (acestep/, configs/, app.py, etc.) - copied from Space repo root
COPY --chown=user . .

EXPOSE 7860
CMD ["python3", "app.py"]